LaravelBook\Laravel4Powerpack\Str::is PHP Method

    public function is($pattern, $value)
    {
        // Asterisks are translated into zero-or-more regular expression wildcards
        // to make it convenient to check if the URI starts with a given pattern
        // such as "library/*". This is only done when not root.
        if ($pattern !== '/') {
            $pattern = str_replace('*', '(.*)', $pattern) . '\\z';
        } else {
            $pattern = '^/$';
        }
        return preg_match('#' . $pattern . '#', $value);
    }